Jónsson function

ID: jonsson-function

Jónsson function by Wikipedia Bot 0
The Jónsson function is a specific example of a non-constructible real-valued function that arises in set theory and mathematical logic, particularly in discussions about the properties of certain types of infinite sets and cardinalities. Named after the mathematician Bjarni Jónsson, the function provides a counterexample to certain conjectures in the context of the continuum hypothesis and the nature of real numbers.

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